Banana Boat - We've Got You Covered

Be sure to coat those spots that will get prolonged exposure, like the back of your neck and shoulders. If you plan on being active, use a sweat-resistant sunscreen, like Banana Boat® Sport Sunscreen Lotion SPF 30.
Reapply sunscreen frequently, at least every two hours. If you’re in the surf or if you’re breaking a good sweat, reapply more often, every 40 to 80 minutes.
Put sunscreen on before you dress, ensuring that you cover those often-forgotten spots, like ears, and the backs of hands and arms. If possible, carry a spray-on sunscreen with you, like Sport Spray SPF 50, so you can keep moving.
Remember that water acts as a lens, reflecting the sunlight to your skin and magnifying the effect. So whether you’re on a board or a boat, use a high SPF sunscreen that’s also water-resistant for more hard-hitting protection.